Adsolubilization of Fluorocarbon Alcohols into Perfluoroheptanoate Admicelles Formed on Alumina

Sodium perfluoroheptanoate adsorption and adsolubilization of small aliphatic fluorocarbon alcohols into surface aggregates formed on alumina was investigated. Higher concentrations and increasing hydrophobicity of the adsolubilizate enhanced surfactant adsorption below the plateau region. Partition...

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Bibliographic Details
Published in:Langmuir 1997-08, Vol.13 (16), p.4267-4272
Main Authors: Lai, Chung-Li, O'Rear, Edgar A, Harwell, Jeffrey H, Hwa, Michael J
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Solid-liquid interface
Surface physical chemistry
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Summary:Sodium perfluoroheptanoate adsorption and adsolubilization of small aliphatic fluorocarbon alcohols into surface aggregates formed on alumina was investigated. Higher concentrations and increasing hydrophobicity of the adsolubilizate enhanced surfactant adsorption below the plateau region. Partitioned amounts of the fluorocarbon alcohols rose with the alcohol supernatant concentration and chain length. Aggregation numbers were estimated with the two-site adsolubilization model.
ISSN:0743-7463
1520-5827
DOI:10.1021/la960366i